Calculating machine



1.- c. WAHL., CALCULATI'NG MACHINE. AFPLICATION FILED AUG.20. 1.9!?.

1,311,730. j Patented Ju1y29,1919.

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/lf' V l 1. ci WAHL. CALCULATlNG MACHNE.

APPLICATXSN FILED AUG-20.1917.

atente 1113.7 29, 1919,

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` citizen of the 'United States,

"denomination of which to the base 1G..

-numbers are'to f our different bases. ftons are to the ibase 10the hundred weight UNITED "STATES -PATENT orrioE.

JOHN CLAWAHL, oFCHIcAGo, `ILLINo1s, as siGNoR To 'rHE WAHL COMPANY, or WILMINGTON, DELAWARE, AcoaroRA'rIoN or DELAWARE.

CALCULATINo-MACHINE. l

Application led August 20, 191'?.

To'aZZ whom it may concern it known that I, JOHN C. WAHL, a residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Calculating-Machines, ofywhich the followinig'is a specication.

My invention is anim rovement in totalizers for use with typewriter calculatingmachines,'and particularly has for its object the provision of a totalizer which will calculate -in the longr ton ta'ble. This table is exten sively used in maritime shipping and is as follows:

Twenty-eight pounds equal one quarter.

Four quarters equal one hundred weight. Twenty hundred weight equal one long ton. f

It will'be observed that in this table the T ic areV to thejbase 20, the quarters are to the base 4 and the pounds are to the base 28.

Itis possible to handle quintities in the first three of these bases on the Wahl totalizer as ordinarily made, since quantities tov the hase vl() are handled 1n the regular money totalizer; quantities to the Vbase 20 are handled in the Wahl typeof English totali/eer by the expedient of making one denomination carry every tenth step and the neXt higher combination carry every second step. The combination of the two wheels will thus calculate to the base 20. Calculations to the hase 4 are' easily' accomplishedin a lVahl totalizer which calculates Indian currency, one

Therefore, handling numbers to the hase 4 may be accomplished hy using a wheel used to calculate to the base 16 and providing a. carrying tooth at every fourth step. However, handling the base 28 offers peculiar diiiiculties, for the reason that the number of steps, viz., twent \,'eight, is entirely too large to be accommodated one single numher Wheel of a Wahl totalizer and therefore it would be necessary to divide the units, that is, show the figure denoting the lOs on one Wheel, and figures denoting the units on another wheel. But this course again leads to dfhulties for the reason that the units Wheel will have to carryy at some space when it'pas'ses from 9 to'fl, e. g., in passing from 9 to 10, or 19 to 20, and this same Wheel at l other places will have torarry between the Bpecication of Letters Patent.

fourteen Patented 'J lily 29, 1919. serial No. 187,106.

seventh and eighth steps, e. ff., passes from 2T to 0. These two requirements are contradictory and l have accordingly solved this complicated problem by thc expedient ot' making a number whecl uilh steps, havinglF two .sets ot' numbers thereon, from O to 123 in one row, and irour 14 to :27 in another row, and providing a shiftable shutter whichoperates in a cycle ot' two steps and is arranged to expose the rows alternately. From the above it will ybe apparent that thc object ot my invention is the provision ot an etiicicnt and simple totalizer which will calculate weights cxpressed in the long ton table and which is particularly applicable to he usediwith the well-known lValfl adding machine.

My invention will be best understood b v as when itreference to vthe following figures, ot which Figure 1 is a sectionthrough my improved totalizer; Fig. 2 is a partial line of Fig. l;

-Fign P is a section alongr the linel 3 3 of Fig. 1;

plan section alongr the Fig. 4 is a persl'icctivc view ofthe shuttcrl oi'ierating cam, and

Fig. 5 is a development of thc number wheels.

10. which travels with thc typewriter carriage in the manner descrilxfd in my cited patent. Numbers are inserted into the totalizcr hy a master wheel 11, which is mounted on a shaft 1'2, which rotates in the framework of the machine a differential amount as the numeral keys. not shown, are operated. A master dog 13 serves to unlock the carryingchain ofl the totalizers prior to the insertion of each digit of the numbers, the cycle of action being that the master dog. 13 rotates on its axis 14 in a counter-clockwise direction, the master 'wheel A11 rotates a number of steps propor tional to the digit which is inserted, then the master dog 3.3 returns to its original position. This cycle of action is the eus! tomary cycle of the Wahl machine and need not be further described. The totalizenis supported between side.'A plates liand 16, which are held together by suitable pillars and serve to support a series oi shafts rotatably mounted on which are the various gears of which the tot-alizer is composed. The totalizcr sideplates serve to support a shaft 17, on which are rotatably mounted the totalizer gears to 37 inclusive, all of which are adapted to engage with' the master wheel 11. A shaft 18, rigid in the side plates, serves to support a set of vintermediate gears 19, which are rotatably mounted thereon and serve to transmit the motion of the totalizergears to a set or' number wheels 20 to 27 inclusive, which are rotatably mounted on a shaft 28, held be# tween the side plates. 38 and 3,9,- which are mounted on studs 40 and 41 in swinging arms 42 and 43 rota.-

the side ,plates 15 and 16, serve to transmit the niotion of thew'nee of lower order to that of higher order when the wheel' of lower order has turned through a complete cycle. ,The carrying/mechanism is, except for'sone slight modifications as to carrying in a-cycle other than 10, the same as that described in the totalizer of the cited patent.-

vThe gear arrangement of my improved totalizer may be best understood by referring to Fig. 5, in which is Shown a development of the various number wheels convided With threecarrying points. The four wheels, 20.1to- 23' inclusive, will, therefore,

1- earry'in a cycle-of ten.

The next two wheels 24 and 25 ha've the numbers arranged' as shown in Fig. 5i. The' wheel 24 carries every second step and the wheel' 25y carries every tenth j step.' Both wheels are driven by totalizer gears 34 Vand 35, of )thirty teeth each. Wheel 34 has fteenberrying teeth and wheel 35 has has vthirty''-two lteeth," and.rl eight carryinw teeth."-- It, therefre, carries every four numb'erlwheel 26, in mesh with the totalizer gear 36, has eight steps and has its-numbers arranged in two groups containing four numbers each. The totalizerf gear 37 is composed of two distincte gears of fourteen teeth'eaeh and these gears' y when driven from the extreme righthand ear but rovidin' a means of disconnection ot the two units when the gear 37V The ,carrying gears l seven, said numbers being arranged in two parallel rows. The numberD wheel 2,7 is provided with fourteen teeth.

The totalizer is provided with a cover 47,

having a'lsi'ght window 48 therein, and between said window andthe number whee 2'? is. a shutter 49, which is rotatahiy mounted on the shaft -28 and has therein a window 50 adated toldisplaythe numbers in the rowhea ed 1s in the wheel 27 and window 5,1 which is adapted to display the numbers Yinthe row headed zero in said wheel. The shutter is 'actuated by means-i g 'ot a slot' in' the sides thereof, engaging tably mountedon shafts 44 and 45, rigid in injfvhich is a pin 52, mounted on a rocker 3,rotatably mounted on the shaft 18- and provided with pallets 54 and 55, which are posite the''sight opening 48 at every tom rari teenth step of the totalizer wheels 37. 'Thus one or the other of the two sets of numbers on the number :wheell 27 are alternate-.ly

f exhibited.

As before noted, thelactuator employed with my improved 'totalizer is of the standard Wahlform, with-the exception that it is of the peculiar variety or species h n, as the Sterling actuator, En this act there is provideda` key, which, when ac ated, will print l and rotate the mas-te,

i wheel 11 tenspaces. This key. is used in Ventering numbers 'in the denomination ot pounds. For instance, if it were desired to enter thirteen pounds, this special hey would he operated in thel tens place, thus rotating the left hand wheelv? 'ten spaces andv print' a l on the worksheet in'the'tens place. The -key would next beA operated', with the result of rotating the Arightha'nd wheel 5'? three spaces and printing a. 3 oaths Werl.,-

sheet to the right of the previouslyprinted 1. Thus the number 1B would'beprinted on the worksheet and entered in the' totalizer.

The insertion of a number of ounds such .as 25 is accomplished in the foi owing man A ner: The special key previously referred to is provided to print a 2 in'its shift position. To insert pounds into the totalizer,l it is necessary to bring the totalizer to a position in which the lefthand wheel 37' is in mesh with Athe master wheelll. .The

platen is'then thrown to its shift position,

and the special key ignperated, will las print Z'on the worksheet and insert l10 in the'totalizer. The typewriter carriage is back-spaced and the special'key operated again in its shift position. This will result in printing a second 2 on the worksheet and again inserting l into the totalizer. Since, however, this second 2 is superimposed Aon the 2 previously printed,

i art that my herein described structure is the two impressions will appear as one and 20 will have been inserted in the totalizer as a result of the two operations of the IO-key. The -key is then operated, with the result that 5 will b e printed on the worksheet to the right of the previously printed 2, and 5 will be inserted into the totaliter.4 As a result of these operations 'there will be 25 printed on the worksheet and entered in the pound denomination 0f the totalizer.

It will be obvious to'those skilled in the capable of many modifications and that the principle of having two sets of numbers on anumber wheel and having a shutter shiftable to exhibit one or the other ofthe two sets may be extended to totalizers calculating tables. other `than the precise table which is calciulated by my totalizer herein described. However, such changes and 'modifications will be apparent to those skilled in the art and I do not wish to be limited to the precise structure herein described,l

since I cla-im:

' 1. In a totalizer, the combination of a' number wheel having a plurality of sets of figures arranged in. rows, theI highest'igure in one row being less than the lowest figure in a second row, a sight opening through which said figures mayl be Viewed, and a shiftable shutter having two alternate positions and arranged to display figures in one or the-other of,said rows.

2. In a totalizer, the combination of a number wheel having thereon numbers arranged in two rowsthe highest number. in

- one row beingl less than the lowest number in the other row, an o'scillating shutter eooperating with said number wheel, openwindows therein, each window being. adapt ed to exhibit one or the other of said sets of numbers, means to shift said shutter in one direction coincident with the passing of the number wheel from its thirteenth to its fourteenth step, and means to restore it toits original position on the passage of said number wheel from its twenty-seventh to its twenty-eighth step.

4. In a -calculating machine, the combination of a totalizer, a number wheel therein, said -wheel having thereon numbers arcoo shuttierhaving openings adapted to display iigures in one or the other of said rows, a gear to enter numbers in said number wheel, and a cam revolving synchronously with said gear and-arranged to shift the shutter so, as to display one or the other'ot said rows of figures.

'5. In a calculating machine, the combinaA tion of a totalizer, a number wheel therein', said wheel having thereon numbers arranged in two rows, an` oscillating shutter coperating'with said number wheels, said shutter having openings adapted to display figures i in one or the other of said rows, a gear arranged to operate said number wheel, a cam rigid to said gear, and means operated by said cam to shift said shutter to alternate positions. A

AIn witness whereof I have hereunto sub scribed my name.

JOHN C. WAHL.

ran ed in two rows,`an oscillating shutter erating with said number wheels, said. 

